Can-end-seaming device.



C. W. GRAHAM. CAN END SEAMING DEVICE.' APPLICATION FILED MAR` '#15,|916.

Paten-m1- Apr. 9,191&

ATTORNEY UNITED sTATEs PATENT oEEicEff:

.CHARLES w.' GRAHAM, -oE cEESTWoon, NEWVYOEK, A'ssrIeNoE ToAMEEICAEioAiQCQMPANY, E NEW YORK, N. Y., AcoEPoRATIoN or NEW JERSEY.

oANENn-SEAMING nEvrcE .l

' Appucatio mea MarchV 15,1916. seramlseasa To-cZZ wia-01a may concern.'

. 'a specification.

loA

without the use 'of solder for the attachment of 'the end parts; and hasfor its objects to 3 Beit lknown ,that I, CHARLES W. GRAHAM, av citizenof the United. States, residing at Crestwood, in the county ofWestchester and State of New York, have 'invented certain new and usefulImprovements in Can-End- SeainingDevices, of which the following Vis The invention relatesA to I the hermetic sealing of cans ofthe So-jcalledsanitary type,

flange so as to be fed with the can body, and' to be stationarytherewith during the sealing operation, the flange and ring-liner beingadapted to beinfol ved with. the cover flange in a known manner to forma hermetic double or equivalent Seam. Moreover the outer peripheral edgeofthe packing is inclosed .b y a rim flange formed onl the peripheraledge kof the can body flange, 4which rim flange is turned up and-inward'so as to overlie and confine theA packing and effectua-lly prevent itbeing 10st or displaced at anytime before 'the can closing operation.

The said angedcan body and packing constitute a sealing element or unitwhich is or.

may be supplied to packers for use with any suitable and correspondingtopv end or cover.

, Advantages attendant on this improvement are that it is 'practicallyinsured that no can shall be closed without a packing in the closurelseam, also it is desirable that'the packing'be free with respect to thecover and not .partake of4 any rotary movement of the 'same' which `maybe imparted by the seaming head, but remain fixed with respect' to thecanflange;` whereby the cover may turn 4 smoothly on the packing `andthe latter lWill not be fabraded, cut or crumpled bybeing rubbed againsteither the outer or the inner edge of the can bodyvange, or againstthesurface thereof, which isv -ord1nar1l [not so smooth as the face of thecover, an by thisspecifi`catio1i-qfLette'rs raient, y i 1) been made thesubjectjof illustration-"f1 'L 'to the closing station. This? is rimprovement the packing is relatedmtdthelt can body Aas desired andyismorefully prof tected agamstan'y cutting, abrasion ordisplacement lbythe closing operation.

With such objects 'in view, as wellas'other .advantages which may beincidentto the `se 60 'I of the improvements, thefinventionconsists inthe parts and combinations thcreofhere- 'lnafter setf. forthl andclaimed, With. the

understanding that the severalnecessaryfelements constltutmg thesame'may bef varied.

y65.V 1n proportions and arrangement wlthout de A parting from thenatureof the inY-ention,

- l In order to make'x-the invention' more Aclearly understood there isshownfintheyacf y companying v drawings 'means for` carrying; the samemto practical eect, without-` limitmg the improvements, in their!vusefull appli,-

catinS, to the' particular constructions which, for the purposeofexplanation,=.hI

the'saiddrawingsf-HJ- Figure 1 is' =a' top plan' viewsofalflalnged canbody,and a packing, embodying-theinyention, thecover being' indicatedin`-dott`ed mes. w

Fig.2 is a vertical. sectioniof ythefupper yend of the Same, with'the-ftopf Aselarated therefrom', on a'larger scale.

Fig, lf'is a :similarview oflthe'camfshow.- `ing theirst operation ofsealing andvillus-r` trating'how'the' flexible liner is' protected' fromabrasion or. displacementfas the double seaming is started. "i 'Y Fig. 4is a simil'ar L'viewgshowingfthe. I double Seam completed into, a"herme'tic'gseal".

Referring' to' the drawings',"1 .is y't'he'can body formed at'its. mouthwith' an outstandin'gperipheral flange' 2.y This flange is lsuitabletobe interfold'ed with a corresponding p A flangej of ai'top end orcancover 4 ill a. known Vmanner and by automatic machinery` to-.form ahermetic sanitary' closure,:w`ith the'aid of the interposed packing orrin liner 5.- Such cover is preferably' forme' withl a centraldepression or shoulder 6 adapted .to fit the interior of the can mouth,

@and with a 'depending lip or--curl 7 atthe ietremity of the flange 3.

This ring-liner or its equivalent is fixed on' the body flange' 2 beforethe bod is' fled oney havingthe rinliner terminate. alittle inf' side ofthecan ody flange 2, and by forme msj ing ou the said flange, before orafter the application ol the liner, a rim flange 8 which overlies theouter margin of the ring-liner.

rlfhis form oli sealing element,comprising the flanged can body and theattached and marginally inclosed packing, gives the result ot a hermeticclosure when the 'cover is seamedthereto, with the additional advantagebefore mentioned.

When the seaming devices first come into operation, they may cause arotation of the cover on the can body and ring-liner, as the cover bearson, or mainly on, the rim flange S, and by the time that the cover iscompressed tightly on the .ring-liner it ceases to rotate under theinfluence of the seaming devices. The ring-liner is thus protected andits integrity maintained so that it performs its proper function as anelement of the hermetic seal.

Also in the act of forming the well known double seam, the liner isetfectively protected at its outer edge from abrasion or displacementcaused by the edge of the body flange rubbing against the inner surfaceof the cover flange during the early stages of starting the double seam.wWhere the liner is placed in the cover flange it sometimes happens thatthe edge of the body flange seizes the yielding surface of the liner andtends to push it outward into the curl of -the cover flange, just as thebending, due to forming the seam, begins; this action displaces theliner from its normal concentric position and produces a seam ofquality.

The lip orI curl 8 in this invention, ab-

` sorbs all abrasion due to jbending or forming the seam and holds theliner in. exactly the right position to form a hermetic joint.

The lip 8 of the' body flange may change the final shape of the doubleseam from that usually employed, by producing a shoulder 9 around whichthe cover flange may be formed. have illustrated this changed form inFigt 4*.

doubtful terial.

lfhat is claimed is:

l. A sheet metal can body having a 'flange extending outwardly from saidbody and formed with an upwardly and inwardly turned edge and adaptedfor double seaming with a can uid, said flange being nearly enoughhorizontal for the purpose ol double seaming, and having thereon aring-like packing which is held in place by the upwardly and inwardlyturned edge of said flange. i

A sheet metal can body havi Ag a tlange extending outwardly from saidbody and formed with an upwardly and inwardly turned edge and adaptedfor double seaming with a can end, said flange having.

thereon a ring-like packing the outer1nargin of which 1s 'inclosed bythe upwardly and inwardly turned edge of said llange,

and the inner margin of which terminates outside of the vertical faceotI the can body which is .to fit against the corresponding tace ofthecanend.

3. In a sanitary can seal comprising flanged body and end elementsdoubled seamed together, gasket material appliedl on the top of' theflange of vthe body element, the edge of said body element being bentprior to the double seaming operation up wa-rdly and inwardly over aportion of said gasket material.

il. In a sanitary can seal comprising flanged body land end elementsdouble seamed together, gasket material applied between the inner andmain portions of the flanges of said elements near to the bases of bothof-said flanges and to the can body wall and directly on that one ofsaidelements `:which is interior in the seam and is inclosed by theother element, the edge of said interior element being bent prior to thedoiible seaming operation upwardly and inwardly over a portion of saidgasket maln testimony whereof I affix my signature.

CHARLES W. GRAHAM.

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